java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label59_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:44:00,150 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:44:00,156 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:44:00,176 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:44:00,176 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:44:00,178 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:44:00,179 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:44:00,184 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:44:00,187 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:44:00,188 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:44:00,189 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:44:00,189 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:44:00,190 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:44:00,191 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:44:00,192 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:44:00,193 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:44:00,193 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:44:00,195 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:44:00,197 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:44:00,199 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:44:00,200 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:44:00,201 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:44:00,203 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:44:00,212 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:44:00,237 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:44:00,237 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:44:00,238 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:44:00,238 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:44:00,239 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:44:00,239 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:44:00,239 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:44:00,239 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:44:00,240 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:44:00,240 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:44:00,240 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:44:00,240 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:44:00,241 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:44:00,241 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:44:00,242 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:44:00,242 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:44:00,242 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:44:00,242 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:44:00,242 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:44:00,243 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:44:00,243 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:44:00,243 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:44:00,243 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:44:00,243 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:44:00,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:44:00,244 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:44:00,244 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:44:00,244 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:44:00,244 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:44:00,245 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:44:00,245 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:44:00,245 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:44:00,245 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:44:00,245 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:44:00,289 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:44:00,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:44:00,312 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:44:00,313 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:44:00,314 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:44:00,314 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label59_true-unreach-call_false-termination.c [2018-10-24 21:44:00,384 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6072bbbf/dabc64bfd30e4c559333a2fec11f8606/FLAG0c3375283 [2018-10-24 21:44:01,019 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:44:01,024 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label59_true-unreach-call_false-termination.c [2018-10-24 21:44:01,048 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6072bbbf/dabc64bfd30e4c559333a2fec11f8606/FLAG0c3375283 [2018-10-24 21:44:01,069 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6072bbbf/dabc64bfd30e4c559333a2fec11f8606 [2018-10-24 21:44:01,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:44:01,083 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:44:01,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:44:01,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:44:01,087 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:44:01,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:44:01" (1/1) ... [2018-10-24 21:44:01,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a192096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01, skipping insertion in model container [2018-10-24 21:44:01,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:44:01" (1/1) ... [2018-10-24 21:44:01,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:44:01,164 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:44:01,613 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:44:01,619 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:44:01,778 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:44:01,795 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:44:01,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01 WrapperNode [2018-10-24 21:44:01,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:44:01,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:44:01,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:44:01,797 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:44:01,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01" (1/1) ... [2018-10-24 21:44:01,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01" (1/1) ... [2018-10-24 21:44:02,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:44:02,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:44:02,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:44:02,013 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:44:02,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01" (1/1) ... [2018-10-24 21:44:02,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01" (1/1) ... [2018-10-24 21:44:02,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01" (1/1) ... [2018-10-24 21:44:02,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01" (1/1) ... [2018-10-24 21:44:02,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01" (1/1) ... [2018-10-24 21:44:02,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01" (1/1) ... [2018-10-24 21:44:02,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01" (1/1) ... [2018-10-24 21:44:02,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:44:02,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:44:02,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:44:02,123 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:44:02,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:44:02,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:44:02,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:44:02,205 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:44:02,207 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:44:02,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:44:02,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:44:02,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:44:02,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:44:06,070 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:44:06,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:44:06 BoogieIcfgContainer [2018-10-24 21:44:06,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:44:06,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:44:06,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:44:06,075 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:44:06,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:44:01" (1/3) ... [2018-10-24 21:44:06,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f90887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:44:06, skipping insertion in model container [2018-10-24 21:44:06,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:01" (2/3) ... [2018-10-24 21:44:06,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f90887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:44:06, skipping insertion in model container [2018-10-24 21:44:06,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:44:06" (3/3) ... [2018-10-24 21:44:06,079 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label59_true-unreach-call_false-termination.c [2018-10-24 21:44:06,089 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:44:06,097 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:44:06,115 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:44:06,155 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:44:06,155 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:44:06,156 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:44:06,156 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:44:06,156 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:44:06,156 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:44:06,156 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:44:06,157 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:44:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:44:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-24 21:44:06,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:06,194 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:44:06,197 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:06,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:06,204 INFO L82 PathProgramCache]: Analyzing trace with hash 403888209, now seen corresponding path program 1 times [2018-10-24 21:44:06,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:06,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:06,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:06,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:06,265 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:06,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:44:06,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:44:06,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:44:06,709 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:06,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:44:06,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:44:06,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:44:06,735 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:44:08,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:44:08,624 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:44:08,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:44:08,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-10-24 21:44:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:44:08,647 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:44:08,648 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:44:08,656 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:44:08,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:44:08,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:44:08,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:44:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 772 transitions. [2018-10-24 21:44:08,788 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 772 transitions. Word has length 47 [2018-10-24 21:44:08,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:44:08,789 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 772 transitions. [2018-10-24 21:44:08,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:44:08,789 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 772 transitions. [2018-10-24 21:44:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 21:44:08,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:08,805 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:44:08,805 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:08,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:08,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1310565324, now seen corresponding path program 1 times [2018-10-24 21:44:08,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:08,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:08,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:08,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:08,810 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:44:09,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:44:09,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:44:09,191 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:09,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:44:09,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:44:09,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:44:09,194 INFO L87 Difference]: Start difference. First operand 434 states and 772 transitions. Second operand 6 states. [2018-10-24 21:44:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:44:12,814 INFO L93 Difference]: Finished difference Result 1234 states and 2250 transitions. [2018-10-24 21:44:12,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:44:12,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 21:44:12,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:44:12,830 INFO L225 Difference]: With dead ends: 1234 [2018-10-24 21:44:12,830 INFO L226 Difference]: Without dead ends: 806 [2018-10-24 21:44:12,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:44:12,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-10-24 21:44:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 797. [2018-10-24 21:44:12,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-10-24 21:44:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1300 transitions. [2018-10-24 21:44:12,884 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1300 transitions. Word has length 117 [2018-10-24 21:44:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:44:12,885 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 1300 transitions. [2018-10-24 21:44:12,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:44:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1300 transitions. [2018-10-24 21:44:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 21:44:12,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:12,892 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:44:12,893 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:12,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:12,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1516534009, now seen corresponding path program 1 times [2018-10-24 21:44:12,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:12,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:12,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:12,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:12,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:13,193 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:44:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:44:13,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:44:13,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:44:13,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:13,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:44:13,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:44:13,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:44:13,424 INFO L87 Difference]: Start difference. First operand 797 states and 1300 transitions. Second operand 5 states. [2018-10-24 21:44:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:44:19,035 INFO L93 Difference]: Finished difference Result 2186 states and 3741 transitions. [2018-10-24 21:44:19,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:44:19,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-10-24 21:44:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:44:19,061 INFO L225 Difference]: With dead ends: 2186 [2018-10-24 21:44:19,061 INFO L226 Difference]: Without dead ends: 1395 [2018-10-24 21:44:19,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:44:19,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2018-10-24 21:44:19,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1369. [2018-10-24 21:44:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1369 states. [2018-10-24 21:44:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2191 transitions. [2018-10-24 21:44:19,147 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2191 transitions. Word has length 118 [2018-10-24 21:44:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:44:19,149 INFO L481 AbstractCegarLoop]: Abstraction has 1369 states and 2191 transitions. [2018-10-24 21:44:19,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:44:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2191 transitions. [2018-10-24 21:44:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-24 21:44:19,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:19,152 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:44:19,152 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:19,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:19,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1750095403, now seen corresponding path program 1 times [2018-10-24 21:44:19,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:19,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:19,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:19,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:19,157 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:44:19,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:44:19,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:44:19,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:19,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:44:19,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:44:19,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:44:19,356 INFO L87 Difference]: Start difference. First operand 1369 states and 2191 transitions. Second operand 5 states. [2018-10-24 21:44:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:44:22,501 INFO L93 Difference]: Finished difference Result 4059 states and 6474 transitions. [2018-10-24 21:44:22,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:44:22,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-10-24 21:44:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:44:22,529 INFO L225 Difference]: With dead ends: 4059 [2018-10-24 21:44:22,529 INFO L226 Difference]: Without dead ends: 2696 [2018-10-24 21:44:22,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:44:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2018-10-24 21:44:22,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2603. [2018-10-24 21:44:22,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2603 states. [2018-10-24 21:44:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 3729 transitions. [2018-10-24 21:44:22,641 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 3729 transitions. Word has length 120 [2018-10-24 21:44:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:44:22,642 INFO L481 AbstractCegarLoop]: Abstraction has 2603 states and 3729 transitions. [2018-10-24 21:44:22,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:44:22,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 3729 transitions. [2018-10-24 21:44:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 21:44:22,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:22,644 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:44:22,644 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:22,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:22,645 INFO L82 PathProgramCache]: Analyzing trace with hash 289947284, now seen corresponding path program 1 times [2018-10-24 21:44:22,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:22,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:22,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:22,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:22,646 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:44:22,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:44:22,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:44:22,842 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:22,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:44:22,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:44:22,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:44:22,844 INFO L87 Difference]: Start difference. First operand 2603 states and 3729 transitions. Second operand 5 states. [2018-10-24 21:44:25,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:44:25,746 INFO L93 Difference]: Finished difference Result 6795 states and 10054 transitions. [2018-10-24 21:44:25,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 21:44:25,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-24 21:44:25,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:44:25,766 INFO L225 Difference]: With dead ends: 6795 [2018-10-24 21:44:25,766 INFO L226 Difference]: Without dead ends: 3293 [2018-10-24 21:44:25,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:44:25,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2018-10-24 21:44:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3278. [2018-10-24 21:44:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3278 states. [2018-10-24 21:44:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 4140 transitions. [2018-10-24 21:44:25,874 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 4140 transitions. Word has length 121 [2018-10-24 21:44:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:44:25,874 INFO L481 AbstractCegarLoop]: Abstraction has 3278 states and 4140 transitions. [2018-10-24 21:44:25,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:44:25,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 4140 transitions. [2018-10-24 21:44:25,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-24 21:44:25,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:25,882 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:44:25,882 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:25,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:25,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2133746483, now seen corresponding path program 1 times [2018-10-24 21:44:25,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:25,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:25,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:25,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:25,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:44:26,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:44:26,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:44:26,152 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:26,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:44:26,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:44:26,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:44:26,154 INFO L87 Difference]: Start difference. First operand 3278 states and 4140 transitions. Second operand 4 states. [2018-10-24 21:44:27,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:44:27,946 INFO L93 Difference]: Finished difference Result 6733 states and 8492 transitions. [2018-10-24 21:44:27,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:44:27,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 220 [2018-10-24 21:44:27,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:44:27,966 INFO L225 Difference]: With dead ends: 6733 [2018-10-24 21:44:27,966 INFO L226 Difference]: Without dead ends: 3461 [2018-10-24 21:44:27,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:44:27,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2018-10-24 21:44:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3461. [2018-10-24 21:44:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3461 states. [2018-10-24 21:44:28,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3461 states to 3461 states and 4335 transitions. [2018-10-24 21:44:28,071 INFO L78 Accepts]: Start accepts. Automaton has 3461 states and 4335 transitions. Word has length 220 [2018-10-24 21:44:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:44:28,072 INFO L481 AbstractCegarLoop]: Abstraction has 3461 states and 4335 transitions. [2018-10-24 21:44:28,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:44:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3461 states and 4335 transitions. [2018-10-24 21:44:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-24 21:44:28,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:28,084 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:44:28,085 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:28,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1526294730, now seen corresponding path program 1 times [2018-10-24 21:44:28,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:28,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:28,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:28,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:28,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:44:29,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:44:29,385 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:44:29,386 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-10-24 21:44:29,388 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [622], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:44:29,484 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:44:29,484 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:44:31,691 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:44:36,975 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:44:36,977 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:44:37,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:37,015 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:44:40,117 INFO L232 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 77.87% of their original sizes. [2018-10-24 21:44:40,117 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:44:40,587 INFO L413 sIntCurrentIteration]: We have 261 unified AI predicates [2018-10-24 21:44:40,587 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:44:40,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:44:40,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-10-24 21:44:40,588 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:40,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:44:40,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:44:40,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:44:40,589 INFO L87 Difference]: Start difference. First operand 3461 states and 4335 transitions. Second operand 7 states. [2018-10-24 21:44:57,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:44:57,705 INFO L93 Difference]: Finished difference Result 7101 states and 8875 transitions. [2018-10-24 21:44:57,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:44:57,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2018-10-24 21:44:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:44:57,721 INFO L225 Difference]: With dead ends: 7101 [2018-10-24 21:44:57,721 INFO L226 Difference]: Without dead ends: 3646 [2018-10-24 21:44:57,732 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:44:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2018-10-24 21:44:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3644. [2018-10-24 21:44:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3644 states. [2018-10-24 21:44:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 4520 transitions. [2018-10-24 21:44:57,828 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 4520 transitions. Word has length 262 [2018-10-24 21:44:57,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:44:57,828 INFO L481 AbstractCegarLoop]: Abstraction has 3644 states and 4520 transitions. [2018-10-24 21:44:57,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:44:57,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 4520 transitions. [2018-10-24 21:44:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-10-24 21:44:57,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:57,843 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:44:57,843 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:57,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:57,843 INFO L82 PathProgramCache]: Analyzing trace with hash 457179888, now seen corresponding path program 1 times [2018-10-24 21:44:57,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:57,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:57,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:57,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:57,845 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:58,359 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:44:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 133 proven. 297 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:44:59,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:44:59,092 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:44:59,092 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-10-24 21:44:59,093 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [622], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:44:59,099 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:44:59,099 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:45:01,953 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:45:09,805 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:45:09,806 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:45:09,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:45:09,816 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:45:12,030 INFO L232 lantSequenceWeakener]: Weakened 149 states. On average, predicates are now at 78.62% of their original sizes. [2018-10-24 21:45:12,030 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:45:17,945 INFO L413 sIntCurrentIteration]: We have 372 unified AI predicates [2018-10-24 21:45:17,945 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:45:17,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:45:17,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [15] total 33 [2018-10-24 21:45:17,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:45:17,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 21:45:17,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 21:45:17,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2018-10-24 21:45:17,948 INFO L87 Difference]: Start difference. First operand 3644 states and 4520 transitions. Second operand 20 states. [2018-10-24 21:46:59,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:46:59,807 INFO L93 Difference]: Finished difference Result 7476 states and 9280 transitions. [2018-10-24 21:46:59,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-24 21:46:59,807 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 373 [2018-10-24 21:46:59,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:46:59,823 INFO L225 Difference]: With dead ends: 7476 [2018-10-24 21:46:59,824 INFO L226 Difference]: Without dead ends: 4021 [2018-10-24 21:46:59,833 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 383 GetRequests, 352 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2018-10-24 21:46:59,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2018-10-24 21:46:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 4016. [2018-10-24 21:46:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4016 states. [2018-10-24 21:46:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 4900 transitions. [2018-10-24 21:46:59,982 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 4900 transitions. Word has length 373 [2018-10-24 21:46:59,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:46:59,982 INFO L481 AbstractCegarLoop]: Abstraction has 4016 states and 4900 transitions. [2018-10-24 21:46:59,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 21:46:59,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 4900 transitions. [2018-10-24 21:47:00,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-10-24 21:47:00,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:47:00,002 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:47:00,003 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:47:00,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:47:00,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1800604101, now seen corresponding path program 1 times [2018-10-24 21:47:00,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:47:00,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:00,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:47:00,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:00,005 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:47:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:47:00,340 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 21:47:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 148 proven. 84 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2018-10-24 21:47:00,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:47:00,699 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:47:00,699 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 484 with the following transitions: [2018-10-24 21:47:00,700 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [622], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:47:00,705 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:47:00,705 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:47:03,455 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:48:02,997 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 21:48:02,998 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 21:48:02,999 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 21:48:03,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:48:03,000 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:48:03,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:03,011 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:48:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:03,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:48:03,244 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 21:48:03,445 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:48:03,445 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:48:03,451 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:48:03,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:48:03 BoogieIcfgContainer [2018-10-24 21:48:03,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:48:03,452 INFO L168 Benchmark]: Toolchain (without parser) took 242370.62 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 807.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:48:03,454 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:48:03,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:48:03,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 215.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:48:03,456 INFO L168 Benchmark]: Boogie Preprocessor took 109.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:48:03,457 INFO L168 Benchmark]: RCFGBuilder took 3948.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 130.6 MB). Peak memory consumption was 130.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:48:03,458 INFO L168 Benchmark]: TraceAbstraction took 237379.36 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 696.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:48:03,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 712.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 215.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3948.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 130.6 MB). Peak memory consumption was 130.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237379.36 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 696.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 124). Cancelled while BasicCegarLoop was analyzing trace of length 484 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 237.3s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 138.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1387 SDtfs, 5824 SDslu, 1101 SDs, 0 SdLazy, 9012 SolverSat, 1714 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 75.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 692 GetRequests, 625 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4016occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 80.6s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9961392723859239 AbsIntWeakeningRatio, 0.09162717219589257 AbsIntAvgWeakeningVarsNumRemoved, 910.5734597156398 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 150 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1378 NumberOfCodeBlocks, 1378 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1370 ConstructedInterpolants, 0 QuantifiedInterpolants, 3115999 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 518/817 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown